Ignition device for oil burners and the like



ZWwmM d BY Sept. 8, 1931. Q NS 1,822,777

IGNTTION DEVICE FOR OIL BURNERS AND THE LIKE Filed Dec. 7, 1929 INVENTOR "l5 ATTORNEY v Patented Sept. 8, 1931 UNITED STATES rarer FFICE.

CARL JOHNSON, or GLENCOE, rumors Application filed. December 7, 1929. Serial No. 412,511.

This invention relates to certain novel improvements 1n ignition devlces for 011 burners and the like and has for its principal object the provision of an improved construction of I this character which will be highly efficient in use and economical in manufacture.

The salient object'of my invention is to provide a device which may be expeditiously associated with oil burner constructions of the ordinary type to expedite the ignition thereof. The device is preferably arranged to operate to supply an ignition flame to the fire box prior to the introduction of fuel thereinto. This arrangement will prevent minor explosions which often result from the ignition of atomized fuel in the fire box prlor to the introduction of the ignition flame thereinto.

Another object of my invention is to provide a device which will function to bring about instantaneous operation of the members controlling the ignition flame.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings, showing the preferred form of construction and in which: I

Fig. 1 is a side elevational view of'a typlcal form of construction for oil burner controls with which my invention is associated;

Fig. 2 is a perspective view depicting my improved device; and

Fig. 3 is a side elevational view of my improved device in association with the mecha nisms depicted in Fig- 1, said view being taken at the right hand end of said Fig. 1.

In the accompanying drawings 10 indicates the atomized fuel pipe, one end of which is directed toward the nozzle structure 11 and the other end of which is directed toward 5 a housing 12. An inlet 13 is provided in the pipe 10 to which mechanisms leading from wall of the housing 12 and the stop collar 16 fixed on this arm. On the upper side of the housing 12a bearing structure 17 is provided. A lever 18 is pivotally mounted on the shaft 19 carried by the bearing structure 17 and this shaft 19 provides the fulcrum for thelever 18.

Supported at one end of the housing 12 is a housing 20. A shaft21 is extended into the housing 20 and the shaft 21 is directed to. a dash-pot structure that is arranged in the housing 20. The upper end of the shaft 21 is screw threaded and stop nuts 22 and 23 are mounted on this screw threaded end portion in'spaced apart relation. The adjacent end portion 24 of the lever 18 has a slot therein through which the shaft 21 is extended, the nuts 22 and 23 being disposed on opposite sides of the end portion 2 1. An electric contact 25 is carried on the upper side of the housing 12 that is engaged by the lever 18 when said lever is in the position depicted.

A. bracket 26 extends out from the housing 12 and supports a housing 27. In this housing 27 a valve structure of approved form is arranged, which valve structure controls communication between the inlet opening 28 and the outlet opening 29. The valve structure includes an operating plunger 30 that eX- tends through the upper wall of the housing 27. v

An adjustable limit device 31 is mounted on the housing 12 on the opposite side of'the bearing structure from the contact 25 and serves to limit downwardmovement of the lever 18 in this direction.

On the end portion 32 of the lever 18 opposite the'end portion 24': a rocker 33 ispivotally mounted. A lug 34 extends out from the housing 27 and an adjustable stop screw 35 is mounted in this lug. One end portion of the foot portion 36 of the rocker 33 engages the head of this adjustable screw 35. The other end portion of the foot portion 36 is aligned with the plunger 30.

The mechanisms thus far described are for an ordinary oil burner and my improved device is intended to be associated with these mechanisms-to expediate the operation of the valve in the housing 27.

' 24 engages the nut 22 the upward movement a. sis) of this end portion of the lever 18 is retarded by the action of the dash-pot in the housing 20. It is manifest that when the end portion 24 of the lever 18 moves upwardly the end portion 32 will move downwardly,

Downward movement of the end portion 32 causes the rocker 33 to be moved downwardly. The foot portion of the rocker 33 engages the stop screw 35 and also the upper end of the plunger 30. By reason of the downward movement of the end portion 32 the rocker 33 will pivot, the head of the screw 35 serving as a. fulcrum, and therefore the plunger 30 will be moved downwardly to open communication between the inlet port 28 and the outlet port 29. Usually a gas supply is connected to the inlet 28 and a gas carrying pipe is connected to the outlet 29, which gas carrying pipe is directed to the fire box with which the nozzle is associated. Means not shown are associated with the end of the gas carrying pipe associated with the nozzle to ignite the gas escaping therefrom, which gas in turn ignites the fuel passing from the nozzle 11. The means for igniting the gas may be in the form of an electric spark which will be interrupted when the lever 18 disengages the contact 25. It is manifest that an appreciable delay occurs before the plunger 30 is actuated, after interruption of the spark, and therefore it sometimes happens that fuel will collect in the fire box into which the nozzle 11 is directed and when this fuel is ignited an objectionable explosion occurs. My improved device is intended to obviate this condition.

My improved device includes a main frame 37 having a depending portion 38 from which clamp arms 39 are extended. The clamp arms 39 are disposed in embracing relation with the housing 27 and are secured 1 in position by the screw 40 and the nut 41.

The frame 37 also provides a shelf 42 and upwardly extending arms 43 that provide a head portion 44. A shaft 45 is journaled in the arms 43 adjacent the head portion 44.

An arm 46 is pivotally mounted on the shaft 45 and extends downwardly at an angle with respect to the vertical extent of the arms 43 and terminates in a horizontally extending foot port-ion 47'. The foot'portion 47 has lugs 48 thereon in which a pin 49 is journaled.

The pin 49 extends through the bearing portion 50 of the lever 51 and in this manner the lever 51 is connected to the arm 46. The lever 51 includes an angularly upwardly eX- tending portion 52 that terminates in a foot portion 53 that is arranged above the head portion 44. An adjustment screw 54 is mounted in the foot portion 53 and engages the head portion 44. The lever 51 includes an end portion 55 and this end portion 55 is intended to be arranged above the upper end of the plunger 30 below the foot portion 36.

On the shelf 42' apair of electro-magnets 56 are arranged. The arm 46 and the foot portion 47 are preferably made of soft iron and will therefore be readily attractable by the electro-magnets -56.

As is well understood in the art an electric motor is usually employed to drive the mechanism which supply the atomizedfuel to the conduit connected to the inlet 13. Theelectire-magnets 56 will have the windings thereof connected in circuit with the controls for this electric motor.. Therefore when the'circuit is closed to these controls to close the. circuit to the electric motor, the electro-magnets 56 will be energized and they will therefore attract the foot portion 47 which inanifestly causes this foot. portion 47 to move downwardly. Downward movement of the foot portion 47 will also cause downward movement of the lever 51 which will pivot about the shaft 49 inasmuch as the engagement between the head portion'44 and the adustment screw '54 will limit movement of this end of the lever and therefore the end portion 55 of the lever 51 will move downwardly against plunger '30 and open the spring closed valve in the housing 27. Therefore gas or other m'niting medium will be immediately supplied to the fire box associated with the nozzle 11 and therefore this flame will be opcrating prior to the delivery of atomized fuel to said firebox from the nozzle 11 which will cause instantaneous ignition of the fuel and therefore prevent the accumulation thereof and the resultant explosion. Circuit to the coils 56 will be broken when the lever 18 disengages the contact 25. r v

The usual safety and shut-ofi mechanisms will be associated with the device but no disclosure of such arrangement is made herein since they form no particular portion of my invention, any improved device being centered in the inechanisn'is mounted on the frame 2 VVhile' 1 haveillustrated and described the preferred form of construction forcarrying my invention into effect, this is capable of variation and modification, without depart- 111gTIIDIITTJ IG SPlI'lt OEf the invention. I, therefore, do not wish tobe limited to theTprecise details of construction set forth,,but desire to avail myself of such variations and modii 'fications as come within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to protect by Letters Patent is:

1. Actuating mechanism for valves comprising a bracket including a pair of spaced uprights joined at their upper and lower ends to provide an upper and a lower table offset from vertical alignment with each other, electromagnetic means on the lower table, an arm pivotally mounted between said uprights adjacent their upper ends and including a lower endportion providing an armature attractable by energization of said electromagnetic means, a second arm above and pivotally connected to said first named arm, and said second named arm including an end portion projecting above said armature and adapted to engage and depress a valve stem upon attraction of said armature.

2. Actuating mechanism for valves comprising a bracket including a pair of spaced uprights joined at their upper and lower ends to provide an upper and a lower table offset from vertical alignment with each other, electromagnetic means on the lower table, an arm pivotally mounted between said uprights adjacent their upper ends and including a lower end portion providing an armature attractable by energization of said electromagnetic means, a second arm above and pivotally connected to said first named arm, and said second named arm including an end portion projecting above said armature and adapted to engage and depress a valve stem upon attraction of said armature, and adjustable means on said second named arm cooperating with said upper table to limit pivotal movement of said arms.

In testimony whereof I afiix my signature.

CARL JOHNSON. 

